Olfactometer is a device for estimating the intensity of the sense of smell by presenting diluted air samples to panelists.✨
⚠️The principle of olfactometry measurement is determining odour concentration of gaseous sample by presenting a panel of selected and screened human subjects varying the concentration by diluting with neutral gas, in order to determine the dilution factor at the 50% detection threshold.
Calibrate dynamic olfactometer regularly, keep testing environment odour-free and ensure the panelists trained and screened is the important aspects that affect the accuracy of odour measurements.⏲️
Reliable assessors are important to ensure the accuracy of olfactometry measurement✨.
All Panelists are carefully selected; neither those who are particularly sensitive to smell nor those responding solely are suitable candidates.
❌ Panelists should be trained and screened from normal people before they are qualified to be panelists. As the testing results must have a certain degree of universality, the level of sensitivity to smell of the testers must fall within a range.
👉Panelist screening tests uses standard odorous gas (n-butanol) to check the performance of each panelist candidates and select those whose responses are statistically meet the defined criteria to be panelists for real odour test.
👉An odour-free testing environment is required for odour measurement. The following efforts are useful to keep an odour-free testing laboratory:
